Car-wheel lathe



M. F. BouGHEN. CAR WHEEL LATHE.

APPLICATION FILED OCT. 10, |918.

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2 SHEETS-"SHEET l M. F. BOUGHEN.

CAR WHEEL LATHE.

APPLICATION FILED 015.10, 191s.

1,339,017, g Patented May 4,1920.

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MALACHI F. BOUGHEN, 0F HAMILTON, OHIO, ASSIGNOR TO NILES-BEMENT-POND COMPANY, 02E" NEW YORK, N. Y., A CORPORATION OF NEW JERSEY. v

CAR-WHEEL LATI-IE.

Patented May 4, 1920.

Applicationvled October 10, 191'8. Serial No.257,569.

To all whom t may concern.'

Be it known that I, MALACHI F. BOUGHEN, a citizen of the United States, residing at Hamilton, in the county of Butler and State of Ohio, have invented certain new and useful Improvements in Car-Vheel Lathes, of which the following is a specification.

lWhile, the invention relates particularly to car wheel lathes, it will be understood that as concerns some of its features it is capable of a broader application. The invention is particularly applicable to car Wheel lathes of the type in which the work is driven not only from the headstock end but also from the tailstock end. Inasmuch as the work is driven from both ends the two work-supporting devices are both frequently referred to as headstocks and this term will be used herein. In lathes of this type, one of the headstocks, usually the one at the right, is longitudinally movable along the bed, and the object of the invention is to provide improved means controlled by the movement of the work-supporting device or headstock for stopping the action of the power mechan nism when the said device or headstock has been moved to a predetermined position.

The accompanying drawings show the invention applied to a car wheel lathe, but, as stated above, it will be understood that'the invention can be otherwise used. The drawn ings are not to be construed as defining or limiting the scope of the invention, the accompanying claims being relied upon for that purpose.

0f the drawings; t

Figure 1 is a front View of one end of a car wheel lathe embodying the invention.

Fig. 2 is a View similar to Fig. 1 showing the controlling mechanism in a different po*- sition.

Fig. 3 is a plan View.

Fig. 4 is an end view.

Referring to the drawings, 1 represents the main frame or bed-on which many of the other parts are mounted. Longitudinally movable along the bed is a work-supporting device and, in the ca se of a car wheel lathe, this device is a headstock 2. So far as the present invention is concerned, the construction and mounting of the headstock can be widely varied. As illustrated, however, the head stock comprises a longitudinal spindle 3 mounted in suitable bearings and aV face plate 4 `carried by the spindle. At 5 there is a suitable chuck for receiving and holding the aXle of the wheels to be turned, this chuck being under the control of a hand wheel 6. A wheel A and part of an axle B are shown in Figs. 1 yand 2.

For rotating the face plate on the spindle there is provided a large annular gear 7 secured to the face plate. With this gear meshesa 4pinion 8 on a longitudinal shaft l9-mounted in the headstock frame. Secured to the shaft 9 is a gear 10 which meshes with aA gear 11 splined on a longitudinal shaft-12; The gear 11 is positioned between two bearings 13, 13 depending from the headstock, the gear thus being moved longitudinally of the shaft 12 whenever the headstock is-moved along the bed. By means of the gearing described, power can be transmitted from the driving shaft l12 to the face plate, the power connection remaining unbroken when the headstock as a whole is moved.

For moving the headstock along the bed, there is provided a longitudinal ythreaded shaft or screw 14 which has threaded engagement with a nut 15 secured in `the frame of the headstock. The shaft 14 extends .through .a bearing in a bracket 16 secured to the bed, and is held against longitudinal movement with respect to the bracket. A ysuitable power Vdevice is provided for-turning the shaft 14, this power device preferably being an independent electric motor 1,7. As illustrated, the drive shaft of the motorcarries a pinion 18 which meshes with a gear 19 on an intermediate shaft 20. Also carried by the shaft 20 is a pinion 21 which meshes with a gear 22 rotatably mounted .on the shaft 14. Also mounted on the shaft 14 is a suitable clutch 23, preferably of the friction type. The driving element of this clutch is secured to .the hub of the gear 22 and the driven element is secured to the .outer end of the shaft 14. It will be seen that, when the clutch is engaged, power will be transmitted from the motor 17 through the gears 18, 19, 21 and 22 and the clutch 23 to rotate the shaft 14. The shaft 14, by reason of its threaded yengagement with the nut 15, serves to move the headstock longitudinally along the bed. The direction of movement of the headstock can be changed by @hanging the direction 0f rotatian .of the 27, 27 which are adapted to be operated simultaneously. The screws carry arms 28, 28 which are connected by a link 29. One of the screws also carries an arm-30 which is connected by means of a link 31 with a piston in a cylinder 32. By admitting compressedv air to the cylinder 32 the piston can be moved, thus turning the screws 27, 27 sufficiently to clamp or release the headstock.

When the wheels of one set have beenV turned and it is desired to remove them, the headstock is withdrawn, being moved toward the right from the operative position to the eXtreme position shown in Fig. 2. Fig. 1 shows an intermediate position. With machines as heretofore constructed, it has frequently happened that the operator, through negligence, has permitted the power mechanism to continue in operation too long, thus moving the headstock so far as to cause injury or breakage of some part of the machine. In accordance with my present invention I provide means whereby movement of the headstock beyonda predetermined position is automatically prevented, this means being controlled by the headstock movement. As illustrated, there is a lug carried by the headstock which atV the proper time engages suitable devices for disengaging the clutch -23, thus stopping the rotation of the shaft 14. Preferably the devices for automatically disengaging the clutch include the hand lever 24 and other parts already described. l

As illustrated, there is provided a rod' 33 which is mounted on the bed and which is longitudinally movable. The rod is slotted at 34 anda bolt 35 extends through the slot, thus limiting the longitudinal movement. Secured to this rod is a plate 36 whlch is positioned to be engaged by a lug 37 on the frame of the headstock. The rod 33 is connectible with the hand lever 24, the connection preferably consisting of a pin 38 carrled by the lever and entering a notch 39 1n the rod. When the headstock is moved towardthe right the lug 37 at the proper point engages Vthe plate 36 and moves the rod 33 toward the right. The pin 38 is engaged by the left-hand end of the notch 39, thus moving the lever 24 toward the right and 'moving the link 25 and the lever 26 so as to disengage the clutch 23. Fig. 1 shows the hand lever 24 in the position to hold the clutch 23 engaged and thus cause the movement of the headstock toward the right. Fig. 2 shows the several parts in the positions to which they are moved by the headstock, the clutch 23 being disengaged.

ln order that the lever 24 may be moved manually out of the position shown in Fig. 2 to rengage the clutch, I provide means whereby the lever may be disconnected from the rod. As illustrated, the left-hand end of the rod is vertically movable, being supported by means of a spring-pressed plunger 40. When it is desired to swing the lever 24 toward the left, the operator presses down on the rod 33, preferably with his foot, thus releasing the lever. VVith the motor 17 turning in the proper, direction, the operator can then start the headstock toward its work-engaging position by releasing the lever 24, described, and swinging it toward the left to engage the clutch 23. "When the lever has been thus swung toward the left, the pin 38 is on top of the rod, the rod being held depressed. Y

ln order that the rod 33 may be restored to its left-hand josition after the headstock has been moved away from its eXtreme right-hand position, there is provided a spring-pressed plunger 41 which bears against the right-hand end of the rod. This plunger serves to move the rod toward the left as soon as the movement of the headstock permits. When the rod has been thus moved toward the left, the notch 39 becomes opposite the pin 38 and engagement is again effected, the rod being pushed upward. by the plunger 40. The parts are thus restored to the position shown in Fig. l.,V It will be seen that the lever 24 can be moved toward the right to stop the headstock movement without interfering with the position of the rod 33.

,Vhen the headstock is again moved toward the right to its extreme position, the rod 33 is moved as before by the lug 37, thus moving` theV lever 24 and disengaging the clutch 23 in the way already described.

TWhat I claim is:

1. The combination of a bed, a work-supporting device movable along the bed, power mechanism for moving the said device, mechanism for starting the movement of the said device by the said power mechanism, and means controlled by the movement of the device for stopping the action of the power mechanism when the said device has been moved in one direction to a predetermined position.

2. The combination of a bed, a work-supporting device movable along the bed, power mechanism vfor moving the said device, mechanism for starting and stopping the movement of the vsaid device bythe said power mechanism, and means controlled bv the Vmovement of the device for stopping the action of the power mechanism when the said device has been moved in one direction to a predetermined position.

8. 1n a lathe, the combination of a bed, a headstock including a work driving spindle on the bed, power mechanism for moving the headstoclr inward or outward along the bed, means carried in part by the bed and operable 'for driving the spindle when the headstock is in any position, mechanism for starting the movement of the headstock by the power mechanism, and means controlled by the movement of the headstock for stopping the action of the power mechanism when the headstock has been moved outward to a predetermined po sition.

4. The combination of a bed, a work-supporting device movable along the bed, power mechanism including a friction clutch for moving the said device, mechanism for engaging the clutch to start the movement of the said device, and means controlled by the movement of the said device for disengaging the clutch when the said device has been moved in one direction to a predetermined position.

5. The combination of a bed, a work-supporting device movable along the bed, power mechanism for moving the said device, mechanism for starting the movement of the said device by the said mechanism, a rod eX- tending longitudinally of the bed and connected with the power mechanism, and a lug carried by the said device and adapted to engage the rod to move it and thus stop the action of the power mechanism when the said device has been moved in one direction to a predetermined position.

6. The combination of a bed, a work-supporting device movable along the bed, power mechanism for moving the said device, a rod extending longitudinally of the bed and connected with the power mechanism, a lug carried by the said device and adapted to engage the rod to move it and thus stop the action of the power mechanism when the said device has been moved in one direction to a predetermined position, and means supplemental to the rod and operable independently thereof for stopping the movement of the said device by the said power mechanism.

7. .The combination of a bed, a work-supporting device movable along the bed, power mechanism for moving the said device, means for starting and stopping the movement of the said device by the said power mechanism, and means controlled by the movement of the said device for moving the said starting and stopping means to stop the action of the said power mechanism when the device has been moved in one direction to a predetermined position.

8. The combination of a bed, a work-supporting device movable along the bed, power mechanism for moving the said device, a manually movable lever for starting and stopping the movement of the said device by the said mechanism, and means controlled by the movement of the said device for moving the lever to stop the action of.

the power mechanism when the said device has been moved in one direction to a predetermined position.

9. The combination of a bed, a work-supporting' device movable along the bed, power mechanism for moving the said device, a manually movable lever for starting and stopping the movement of the said device by the said mechanism, a rod extending longitudinally of the bed and engaging the lever, and a lug carried by the said device and adapted to engage the rod and thus move the lever to stop the action of the power mechanism when the said device has been moved in one direction to a predetermined position. i

10. The combination of a bed, a Work-supporting device movable along the bed, power mechanism for moving the said device, a manually movable lever for starting and stopping the movement of the said device by the said mechanism, a rod extending longitudinally of the bed and engaging the lever, a lug carried by the said device and adaptedto engage the rod and thus move the lever to stop the action of the power mechanism when the said device has been moved in one direction to a predetermined position, and means permittingl the disengagement of the rod from the lever so that the lever may be moved independently of the rod.

ll. The combination of a bed, a work-supporting device movable along the bed, power mechanism for moving the said device, a manually movable lever for starting and stopping the movement of the said device by the said mechanism, a rod extending longitudinally of the bed and having a notch adapted to receive a part of the lever, a lug carried by the said device and adapted to engage the rod and thus move the lever to stop the action of the power mechanism when the said device has been moved in one direction to a predetermined position, and

ya spring tending to engage the lever and the rod at the said notch but permitting their manual disengagement.

l2. The combination of a bed, a work-supporting device movable along the bed, power mechanism for moving the said device, a manually movable lever for starting and stopping the movement of the said device by the said mechanism, a rod extending longitudinally of the bed and engaging the lever, a lug carried by the said device and adapted to engage the rod and thus lmove the lever yto stop the action of the power mechanism when the said device has been moved in one direction to a predetermined position, and a spring tending to move the rod in the direction opposite to that in Which it is moved by the lug.

13. The combination of a bed, a Work-supporting device movable along the bed, power Amechanism for moving the said device, a

manually movable lever for starting and stopping the movement of the said device by the said mechanism, a rod extending longitudinally ot the bed and having a notch adapted to receive a part of the lever, a lug carried by the said device andadapted to engage the rod and thus move the lever vto stop the action of the power mechanism When the said device has been moved in one direction to a predetermined positiom. a spring tending to engage the lever and the rod at the said notch but permitting their manual disengagement, and a spring tending to move the rod in the direction opposite to that in which it is moved by the lug.

In testimony whereof I hereto aiix my signature.

MALACHI F. BOUGHEN. 

